/// <summary>
/// Checks if the skos:narrower/skos:narrowerTransitive/skos:narrowMatch relation can be added to the given aConcept with the given bConcept
/// </summary>
internal static Boolean CheckNarrowerRelation(RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
var canAddNarrowerRel = false;
//Avoid clash with hierarchical relations
canAddNarrowerRel = !conceptScheme.CheckHasBroaderConcept(aConcept, bConcept);
//Avoid clash with associative relations
if (canAddNarrowerRel)
{
canAddNarrowerRel = !conceptScheme.CheckHasRelatedConcept(aConcept, bConcept);
}
//Avoid clash with mapping relations
if (canAddNarrowerRel)
{
canAddNarrowerRel = (!conceptScheme.CheckHasBroadMatchConcept(aConcept, bConcept) &&
!conceptScheme.CheckHasCloseMatchConcept(aConcept, bConcept) &&
!conceptScheme.CheckHasExactMatchConcept(aConcept, bConcept) &&
!conceptScheme.CheckHasRelatedMatchConcept(aConcept, bConcept));
}
return(canAddNarrowerRel);
}
/// <summary>
/// Adds the given concept to the conceptScheme as top concept of the hierarchy
/// </summary>
public static RDFSKOSConceptScheme AddTopConceptRelation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept)
{
if (conceptScheme != null && concept != null && !conceptScheme.Equals(concept))
{
//Add skos:hasTopConcept relation to the scheme
conceptScheme.Relations.TopConcept.AddEntry(new RDFOntologyTaxonomyEntry(conceptScheme, RDFVocabulary.SKOS.HAS_TOP_CONCEPT.ToRDFOntologyObjectProperty(), concept));
}
return(conceptScheme);
}
/// <summary>
/// Adds the given concept to the collection
/// </summary>
public RDFSKOSOrderedCollection AddConcept(RDFSKOSConcept concept)
{
if (concept != null)
{
if (!this.Concepts.ContainsKey(concept.PatternMemberID))
{
this.Concepts.Add(concept.PatternMemberID, new Tuple <int, RDFSKOSConcept>(this.ConceptsSequentialCounter++, concept));
}
}
return(this);
}
/// <summary>
/// Adds the given literal as 'skos:definition' annotation of the given concept within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddDefinitionAnnotation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept,
RDFOntologyLiteral literal)
{
if (conceptScheme != null && concept != null && literal != null)
{
//Add definition annotation to the scheme
conceptScheme.Annotations.Definition.AddEntry(new RDFOntologyTaxonomyEntry(concept, RDFVocabulary.SKOS.DEFINITION.ToRDFOntologyAnnotationProperty(), literal));
}
return(conceptScheme);
}
/// <summary>
/// Adds the given concept to the collection
/// </summary>
public RDFSKOSCollection AddConcept(RDFSKOSConcept concept)
{
if (concept != null)
{
if (!this.Concepts.ContainsKey(concept.PatternMemberID))
{
this.Concepts.Add(concept.PatternMemberID, concept);
}
}
return(this);
}
/// <summary>
/// Adds the given literal as 'skos:scopeNote' annotation of the given concept within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddScopeNoteAnnotation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept,
RDFOntologyLiteral literal)
{
if (conceptScheme != null && concept != null && literal != null)
{
//Add scopeNote annotation to the scheme
conceptScheme.Annotations.ScopeNote.AddEntry(new RDFOntologyTaxonomyEntry(concept, RDFVocabulary.SKOS.SCOPE_NOTE.ToRDFOntologyAnnotationProperty(), literal));
}
return(conceptScheme);
}
/// <summary>
/// Removes the given concept from the collection
/// </summary>
public RDFSKOSCollection RemoveConcept(RDFSKOSConcept concept)
{
if (concept != null)
{
if (this.Concepts.ContainsKey(concept.PatternMemberID))
{
this.Concepts.Remove(concept.PatternMemberID);
}
}
return(this);
}
/// <summary>
/// Adds the given notation to the given concept within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddNotationRelation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept,
RDFOntologyLiteral notationLiteral)
{
if (conceptScheme != null && concept != null && notationLiteral != null)
{
//Add skos:Notation relation to the scheme
conceptScheme.Relations.Notation.AddEntry(new RDFOntologyTaxonomyEntry(concept, RDFVocabulary.SKOS.NOTATION.ToRDFOntologyDatatypeProperty(), notationLiteral));
}
return(conceptScheme);
}
/// <summary>
/// Adds the given literal as 'skos:example' annotation of the given concept within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddExampleAnnotation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept,
RDFOntologyLiteral literal)
{
if (conceptScheme != null && concept != null && literal != null)
{
//Add example annotation to the scheme
conceptScheme.Annotations.Example.AddEntry(new RDFOntologyTaxonomyEntry(concept, RDFVocabulary.SKOS.EXAMPLE.ToRDFOntologyAnnotationProperty(), literal));
}
return(conceptScheme);
}
/// <summary>
/// Adds a 'skos:semanticRelation' relation between the given concepts within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddSemanticRelation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
if (conceptScheme != null && aConcept != null && bConcept != null && !aConcept.Equals(bConcept))
{
//Add skos:semanticRelation relation to the scheme
conceptScheme.Relations.SemanticRelation.AddEntry(new RDFOntologyTaxonomyEntry(aConcept, RDFVocabulary.SKOS.SEMANTIC_RELATION.ToRDFOntologyObjectProperty(), bConcept));
}
return(conceptScheme);
}
/// <summary>
/// Enlists the skos:exactMatch concepts of the given concept within the given scheme
/// </summary>
public static RDFSKOSConceptScheme GetExactMatchConceptsOf(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept)
{
var result = new RDFSKOSConceptScheme((RDFResource)conceptScheme.Value);
if (concept != null && conceptScheme != null)
{
result = conceptScheme.GetExactMatchConceptsOfInternal(concept, null)
.RemoveConcept(concept); //Safety deletion
}
return(result);
}
/// <summary>
/// Adds a 'skos:narrowMatch' relation between the given concepts within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddNarrowMatchRelation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
if (conceptScheme != null && aConcept != null && bConcept != null && !aConcept.Equals(bConcept))
{
if (RDFSKOSChecker.CheckNarrowerRelation(conceptScheme, aConcept, bConcept))
{
//Add skos:narrowMatch relation to the scheme
conceptScheme.Relations.NarrowMatch.AddEntry(new RDFOntologyTaxonomyEntry(aConcept, RDFVocabulary.SKOS.NARROW_MATCH.ToRDFOntologyObjectProperty(), bConcept));
}
}
return(conceptScheme);
}
/// <summary>
/// Adds a 'skos:broaderTransitive' relation between the given concepts within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddBroaderTransitiveRelation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
if (conceptScheme != null && aConcept != null && bConcept != null && !aConcept.Equals(bConcept))
{
if (RDFSKOSChecker.CheckBroaderRelation(conceptScheme, aConcept, bConcept))
{
//Add skos:broaderTransitive relation to the scheme
conceptScheme.Relations.BroaderTransitive.AddEntry(new RDFOntologyTaxonomyEntry(aConcept, RDFVocabulary.SKOS.BROADER_TRANSITIVE.ToRDFOntologyObjectProperty(), bConcept));
}
}
return(conceptScheme);
}
/// <summary>
/// Enlists the skos:closeMatch concepts of the given concept within the given scheme
/// </summary>
public static RDFSKOSConceptScheme GetCloseMatchConceptsOf(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept)
{
var result = new RDFSKOSConceptScheme((RDFResource)conceptScheme.Value);
if (concept != null && conceptScheme != null)
{
foreach (var closeMatchConcept in conceptScheme.Relations.CloseMatch.SelectEntriesBySubject(concept))
{
result.AddConcept((RDFSKOSConcept)closeMatchConcept.TaxonomyObject);
}
}
return(result);
}
/// <summary>
/// Adds a 'skos:exactMatch' relation between the given concepts within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddExactMatchRelation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
if (conceptScheme != null && aConcept != null && bConcept != null && !aConcept.Equals(bConcept))
{
if (RDFSKOSChecker.CheckCloseOrExactMatchRelation(conceptScheme, aConcept, bConcept))
{
//Add skos:exactMatch relation to the scheme
conceptScheme.Relations.ExactMatch.AddEntry(new RDFOntologyTaxonomyEntry(aConcept, RDFVocabulary.SKOS.EXACT_MATCH.ToRDFOntologyObjectProperty(), bConcept));
conceptScheme.Relations.ExactMatch.AddEntry(new RDFOntologyTaxonomyEntry(bConcept, RDFVocabulary.SKOS.EXACT_MATCH.ToRDFOntologyObjectProperty(), aConcept)
.SetInference(RDFSemanticsEnums.RDFOntologyInferenceType.API));
}
}
return(conceptScheme);
}
/// <summary>
/// Adds a 'skos:related' relation between the given concepts within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddRelatedRelation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
if (conceptScheme != null && aConcept != null && bConcept != null && !aConcept.Equals(bConcept))
{
if (RDFSKOSChecker.CheckRelatedRelation(conceptScheme, aConcept, bConcept))
{
//Add skos:related relations to the scheme
conceptScheme.Relations.Related.AddEntry(new RDFOntologyTaxonomyEntry(aConcept, RDFVocabulary.SKOS.RELATED.ToRDFOntologyObjectProperty(), bConcept));
conceptScheme.Relations.Related.AddEntry(new RDFOntologyTaxonomyEntry(bConcept, RDFVocabulary.SKOS.RELATED.ToRDFOntologyObjectProperty(), aConcept)
.SetInference(RDFSemanticsEnums.RDFOntologyInferenceType.API));
}
}
return(conceptScheme);
}
/// <summary>
/// Adds the given literal as preferred label annotation of the given concept within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddPrefLabelAnnotation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept,
RDFOntologyLiteral prefLabelLiteral)
{
if (conceptScheme != null && concept != null && prefLabelLiteral != null)
{
//Only plain literals are allowed as skos:prefLabel annotations
if (prefLabelLiteral.Value is RDFPlainLiteral)
{
if (RDFSKOSChecker.CheckPrefLabel(conceptScheme, concept, prefLabelLiteral))
{
//Add prefLabel annotation
conceptScheme.Annotations.PrefLabel.AddEntry(new RDFOntologyTaxonomyEntry(concept, RDFVocabulary.SKOS.PREF_LABEL.ToRDFOntologyAnnotationProperty(), prefLabelLiteral));
}
}
}
return(conceptScheme);
}
/// <summary>
/// Adds the "concept -> skos:hiddenLabel -> hiddenLabelLiteral" annotation to the concept scheme
/// </summary>
public static RDFSKOSConceptScheme AddHiddenLabelAnnotation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept,
RDFOntologyLiteral hiddenLabelLiteral)
{
if (conceptScheme != null && concept != null && hiddenLabelLiteral != null)
{
//Only plain literals are allowed as skos:hiddenLabel annotations
if (hiddenLabelLiteral.Value is RDFPlainLiteral)
{
if (RDFSKOSChecker.CheckHiddenLabel(conceptScheme, concept, hiddenLabelLiteral))
{
//Add hiddenLabel annotation
conceptScheme.Annotations.HiddenLabel.AddEntry(new RDFOntologyTaxonomyEntry(concept, RDFVocabulary.SKOS.HIDDEN_LABEL.ToRDFOntologyAnnotationProperty(), hiddenLabelLiteral));
}
}
}
return(conceptScheme);
}
/// <summary>
/// Enlists the narrower/narrowerTransitive concepts of the given concept within the given scheme
/// </summary>
public static RDFSKOSConceptScheme GetNarrowerConceptsOf(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept)
{
var result = new RDFSKOSConceptScheme((RDFResource)conceptScheme.Value);
if (concept != null && conceptScheme != null)
{
//Get skos:narrower concepts
foreach (var narrowerConcept in conceptScheme.Relations.Narrower.SelectEntriesBySubject(concept))
{
result.AddConcept((RDFSKOSConcept)narrowerConcept.TaxonomyObject);
}
//Get skos:narrowerTransitive concepts
result = result.UnionWith(conceptScheme.GetNarrowerConceptsOfInternal(concept, null))
.RemoveConcept(concept); //Safety deletion
}
return(result);
}
/// <summary>
/// Builds a scheme lens for the given concept on the given scheme
/// </summary>
public RDFSKOSConceptSchemeLens(RDFSKOSConcept concept, RDFSKOSConceptScheme scheme)
{
if (concept != null)
{
if (scheme != null)
{
this.Concept = concept;
this.Scheme = scheme;
}
else
{
throw new RDFSemanticsException("Cannot create scheme lens because given \"scheme\" parameter is null");
}
}
else
{
throw new RDFSemanticsException("Cannot create scheme lens because given \"concept\" parameter is null");
}
}
/// <summary>
/// Checks if the skos:closeMatch/skos:exactMatch relation can be added to the given aConcept with the given bConcept
/// </summary>
internal static bool CheckCloseOrExactMatchRelation(RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
var canAddCloseOrExactMatchRel = false;
//Avoid clash with hierarchical relations
canAddCloseOrExactMatchRel = (!conceptScheme.CheckHasBroaderConcept(aConcept, bConcept) &&
!conceptScheme.CheckHasNarrowerConcept(aConcept, bConcept));
//Avoid clash with mapping relations
if (canAddCloseOrExactMatchRel)
{
canAddCloseOrExactMatchRel = (!conceptScheme.CheckHasBroadMatchConcept(aConcept, bConcept) &&
!conceptScheme.CheckHasNarrowMatchConcept(aConcept, bConcept) &&
!conceptScheme.CheckHasRelatedMatchConcept(aConcept, bConcept));
}
return(canAddCloseOrExactMatchRel);
}
/// <summary>
/// Adds the given label as hidden label of the given concept within the conceptScheme
/// </summary>
public static RDFSKOSConceptScheme AddHiddenLabelRelation(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept,
RDFSKOSLabel label,
RDFOntologyLiteral hiddenLabelLiteral)
{
if (conceptScheme != null && concept != null && label != null && hiddenLabelLiteral != null)
{
//Only plain literals are allowed as skosxl:hiddenLabel assertions
if (hiddenLabelLiteral.Value is RDFPlainLiteral)
{
if (RDFSKOSChecker.CheckHiddenLabel(conceptScheme, concept, hiddenLabelLiteral))
{
//Add hiddenLabel relation
conceptScheme.Relations.HiddenLabel.AddEntry(new RDFOntologyTaxonomyEntry(concept, RDFVocabulary.SKOS.SKOSXL.HIDDEN_LABEL.ToRDFOntologyObjectProperty(), label));
//Add literalForm relation
conceptScheme.Relations.LiteralForm.AddEntry(new RDFOntologyTaxonomyEntry(label, RDFVocabulary.SKOS.SKOSXL.LITERAL_FORM.ToRDFOntologyDatatypeProperty(), hiddenLabelLiteral));
}
}
}
return(conceptScheme);
}
/// <summary>
/// Subsumes the "skos:narrowerTransitive" taxonomy to discover direct and indirect narrower concepts of the given scheme
/// </summary>
internal static RDFSKOSConceptScheme GetNarrowerConceptsOfInternal(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept,
Dictionary <long, RDFSKOSConcept> visitContext)
{
var result = new RDFSKOSConceptScheme((RDFResource)conceptScheme.Value);
#region visitContext
if (visitContext == null)
{
visitContext = new Dictionary <long, RDFSKOSConcept>()
{
{ concept.PatternMemberID, concept }
};
}
else
{
if (!visitContext.ContainsKey(concept.PatternMemberID))
{
visitContext.Add(concept.PatternMemberID, concept);
}
else
{
return(result);
}
}
#endregion
//Transitivity of "skos:narrowerTransitive" taxonomy:
//((A SKOS:NARROWERTRANSITIVE B) && (B SKOS:NARROWERTRANSITIVE C)) => (A SKOS:NARROWERTRANSITIVE C)
foreach (var nt in conceptScheme.Relations.NarrowerTransitive.SelectEntriesBySubject(concept))
{
result.AddConcept((RDFSKOSConcept)nt.TaxonomyObject);
//Exploit skos:narrowerTransitive taxonomy
result = result.UnionWith(conceptScheme.GetNarrowerConceptsOfInternal((RDFSKOSConcept)nt.TaxonomyObject, visitContext));
}
return(result);
}
/// <summary>
/// Subsumes the "skos:exactMatch" taxonomy to discover direct and indirect exactmatches of the given concept
/// </summary>
internal static RDFSKOSConceptScheme GetExactMatchConceptsOfInternal(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept concept,
Dictionary <long, RDFSKOSConcept> visitContext)
{
var result = new RDFSKOSConceptScheme((RDFResource)conceptScheme.Value);
#region visitContext
if (visitContext == null)
{
visitContext = new Dictionary <long, RDFSKOSConcept>()
{
{ concept.PatternMemberID, concept }
};
}
else
{
if (!visitContext.ContainsKey(concept.PatternMemberID))
{
visitContext.Add(concept.PatternMemberID, concept);
}
else
{
return(result);
}
}
#endregion
// Transitivity of "skos:exactMatch" taxonomy:
//((A SKOS:EXACTMATCH B) && (B SKOS:EXACTMATCH C)) => (A SKOS:EXACTMATCH C)
foreach (var em in conceptScheme.Relations.ExactMatch.SelectEntriesBySubject(concept))
{
result.AddConcept((RDFSKOSConcept)em.TaxonomyObject);
result = result.UnionWith(conceptScheme.GetExactMatchConceptsOfInternal((RDFSKOSConcept)em.TaxonomyObject, visitContext));
}
return(result);
}
/// <summary>
/// Checks if the given aConcept skos:exactMatch the given bConcept within the given scheme
/// </summary>
public static bool CheckHasExactMatchConcept(this RDFSKOSConceptScheme conceptScheme,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
return(aConcept != null && bConcept != null && conceptScheme != null ? conceptScheme.GetExactMatchConceptsOf(aConcept).Concepts.ContainsKey(bConcept.PatternMemberID) : false);
}
/// <summary>
/// Checks if the given aConcept has related concept the given bConcept within the given scheme
/// </summary>
public static bool CheckHasRelatedConcept(this RDFSKOSConceptScheme data,
RDFSKOSConcept aConcept,
RDFSKOSConcept bConcept)
{
return(aConcept != null && bConcept != null && data != null ? data.GetRelatedConceptsOf(aConcept).Concepts.ContainsKey(bConcept.PatternMemberID) : false);
}